نتایج جستجو برای: diastolic phase

تعداد نتایج: 636583  

2007
Sachihiko Nobuoka Takahide Matsuda Kengo Suzuki Naohiko Osada Masachika Tamura Fumihiko Miyake

Objectives: The purpose of this study was to assess how the preload reduction a#ects left ventricular LV diastolic function in hemodialysis patients with LV hypertrophy. Methods: Subjects included 14 patients with LV hypertrophy receiving hemodialysis. The subjects underwent echocardiographic and pulsed Doppler examinations before and after hemodialysis, and the data were analyzed to determine ...

Journal: :Stroke 2011
Henri J M M Mutsaerts Inge H Palm-Meinders Anton J M de Craen Johan H C Reiber Gerard J Blauw Mark A van Buchem Jeroen van der Grond Frieke M A Box

BACKGROUND AND PURPOSE Low wall shear stress (WSS) is an early marker in the development of vascular lesions. The present study aims to assess the relationship between diastolic and systolic WSS in the internal carotid artery and periventricular (PWML), deep white matter lesions, and cerebral infarcts (CI). METHODS Early, mid, and late diastolic and peak systolic WSS were derived from shear r...

Journal: :Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia 2002
Mitsumasa Hata Jai S Raman Motomi Shiono Akira Sezai Nanao Negishi Yukiyasu Sezai Sievn Seevanayagam Robin Kanagasaby Meg Store Elizabeth D Croce Brian F Buxton

The Doppler wave form along the proximal left internal thoracic artery (LITA), which is detected by the parasternal or suplaclavicular view, shows a different pattern from that of the distal side of the LITA due to the effect of blood pulsatility from the subclavian artery. We evaluated postoperative LITA function immediately after surgery with an apical approach of transthoracic pulsed Doppler...

2015
Mikhail Y Ledyaev Olga V Stepanova Anastasia M Ledyaeva

BACKGROUND Automatic 24-hour ambulatory blood pressure (BP) monitoring (ABPM) is a basic procedure performed in adults with arterial hypertension, but ABPM monitors have become widely used in pediatric practice only recently. The main problem is the lack of common normative data sets for ABPM in children and the small number of appropriate monitors that can be used for analysis of the 24-hour B...

Journal: :QJM : monthly journal of the Association of Physicians 1995
N M Wheeldon T M MacDonald N Prasad D Maclean L Peebles D G McDevitt

We compared the beta 1-selective adrenoceptor antagonists bisoprolol and atenolol in a double-blind, randomized crossover study. After 4 weeks placebo phase, 59 patients with essential hypertension received either 10 mg bisoprolol or 50 mg atenolol once daily for 8 weeks, increased if necessary (target BP < or = 150/90 mmHg) to 20 and 100 mg, respectively, after 4 weeks. After a second placebo ...

Journal: :British heart journal 1974
Y Nimura H Matsuo T Hayashi A Kitabatake S Mochizuki

Flow velocity spectra of main arteries in 24 healthy adult subjects and 21 healthy aged subjects were transcutaneously studied using the directional ultrasonic Doppler technique. I) The instantaneous flow velocity spectrum is continuous throughout a pulse cycle, and intensified near the instantaneous maximum velocity, especially in the earlypart ofa pulse cycle. 2) No reverse flow phase is obse...

Journal: :Asian journal of andrology 2008
Lu Fu Qian-Ping Gao Jing-Xia Shen

AIM To investigate the relationship between androgen level and the indexes indicating endothelial function in male patients with coronary heart disease (CHD). METHODS We registered the following data for 106 50-70-year-old men: age, weight, blood lipid, including total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol and triglyceride, whether a smoker, su...

Journal: :European heart journal 1997
H Mannaerts A Balk J Roelandt

AIMS The study set out to assess the relative contributions of donor heart rate, respiration and recipient atrial contraction on the mean of pulsed wave transmitral Doppler flow indices in orthotopic heart transplant recipients. This would provide information on the theoretical usefulness of pacemaker synchronization of recipient atrial contraction, as well as on the validity of certain strateg...

Journal: :Circulation research 1967
J V Temte L D Davis

The effects of variation in calcium concentration on the action potential of Purkinje fibers isolated from the dog heart were studied. Action potentials recorded during perfusion with Tyrode solution containing 2.7 mM calcium chloride were compared with those recorded during subsequent perfusion with solutions containing 0.675 ( l / 4 x ) , 1.35 ( l / 2 x ) , 5.4 (2x) , or 10.8 (4x) mM calcium ...

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